Links

http://www.poets.org/poet.php/prmPID/117

http://www.poetryfoundation.org/bio/william-butler-yeats

http://www.poetryarchive.org/poetryarchive/singlePoet.do?poetId=1688

http://www.poetry-archive.com/y/yeats_w_b.html

http://multitext.ucc.ie/d/William_Butler_Yeats